Phonograph.



PATEQNTBD DEG. 31, 1907.

ING. 875,309.

, AMEN, PHQNGGRAP APPLIQATION FILED 0(}T.llx 1907,

arnur nro EDWARD L. AIKEN, OF ORANGE, NEW .IE RSEY, ASSIG'NOR TO NEW JERSEY PATENT COMPANY, OF WEST ORANGE, NEW JEltSEY, A CORPORATION OF' NEW JERSEY.

PHONOGRAPH.

Specification of Letters Patent.

Patented Dee. 31, 1 907.

Application filed October 11. 1907. Serial No. 396,875.

To all whom it may concern:

Be itrlrnown that I, EDWARD L. ALKEN, a citizen of the United States, and a resident of Orange, in thecounty of Essex and State of New Jersey, have invented certain new and useful Improvements in Phonograpi'is,

of which the following is a description.

.My invention relates to phonographs and particularly to means for positively preventing the placing of a phonograph blank or record on the mandrel, or removing it therefrom, when therecorder or reproducer is` in ,such position that they would be liable to be injured by such record or blank. Since, .in t5 order to properly reproduce 'or record sounds on a phonograph it is necessary that the'reproducer stylus or recording stylus shall rest upon the record, a lifting lever is provided .by means of which the recorder or reproducermay be lifted away from the record surface. If, however, a record or blank were 4to be placed upon the mandrel without first operating the lifting lever to raise the recorder 0r reproducer, whichever hap ens to be in use, the stylus will be suspende in the path of the record and there will be danger of the stylus or its support being broken, or, if the cylinder is removed from the mandrel without first raising the recorder or reproducer away from the surface of the cylinder,

the cylinder will be scratched in being so removed and injury may be done to the recorder o r reproducer.

The object ofthe present invention is to rovide a device which shall reakage in the lacing of a cylinder on the mandrel and wil prevent the removal of the cylinder from the mandrel unless the recorder or re reducer is first raised so that the stylus '40 will Je lifted above the path of the cylinder which is being inserted or removed.

I have'shown my invention as applied to the Edison business phonograph, but it is evident that it is appllcable to phcnographs and talking machines of other types.l

In the drawing which forms a part of this specification, the same reference numerals are applied to the same parts ,through-out.`

In the said drawing, Figure 1, 1s a crosssectional detail view showing the application of my invention to an Edison business .phonograph; Fig. 2, is a similar view showmg a different position of the lifting lever; Fig. 3, is a view in perspective of thedevice for prevB5 venting the insertion or removal of a cylinprevent such der, except at the proper time; and Fig. 4, is a` detail view similar to Fig. 2, but taken on a plane at some distance behind the plane upon which the view shown in Fig. 2 is taken.

The reference numeral l indicates the 60 frame of the machine, and 2 the carriage. The reproducer 3 and recorder 4 are mounted upon a spectacle frame upon the carriage in the well-known manner. The carriage is actuated by meansof a feed nut 5 resting 65' upon the feed screw 6. When in position for recording or reproducing the carriageis supportedupon the guide rod 7 and a lifting lever'S is provided to raise the carriage and to thereby disengage the feed nut 5 from the 70 feed screw 6. Fig. 1 shows the carriage resting directly upon the guide rod 7 while Fig.

2 shows thev lifting lever 8 pushed backward so that the carriage is supportedupon the guide rod 7 by means of the recessed portion 75 9 of the said lifting lever. Vhen in this position the recorder and reproducer are supported well above the recording cylinder.

In order to prevent-a record cylinder being placed upon-or removed from the mandrel 80 10 when the recorder or reproducer is in. the lowered position shown in Fig. 1, in which position there would be danger of breaking the recorder or reproducer, or of scratching the record, I lprovide a bar 11 having hook- 85 shaped members 12, which encircle the guide rod 7 near the ends thereof, and also provided with a forwardly and downwardly extending arm 13.

The lifting lever 8 is provided with a finger 90 14 having a beveled end 15,- which extends forward beneath the guide rod 7. This fin ger has been heretofore used to preventthe raising of the carriage and the spectacle frame more than a prescribed distance, but according to my invention, I cause this finger to perform an additional'function-that `of supporting and actuating the bar 11 and the arm 13 in such manner that the arm 13 stands in the path of the cylinder and opposes its being placed upon or removed from the mandrel when the carriage is in its .lowered position, and when the lifting lever is actuated to raise the carriage so that the recorder or reproducer is moved away from the path of the cylinder to be inserted, thls finger 14.0perates to turn the bar 11 and raise the arm 13 so that it will no longer opposethe 'placing of a cylinder upon -or removing it from the mandrel. As the bar 11 110 and its connected parts do not move longitudinally While y,the carriage and lifting lever 8 is moved transversely of the record by means of the feed screw 6, it will be evident that the beveled linger 14 of the lifting lever 8 Will engage the bar 11 throughout the entire length of the latter as the carriage is moved. l

Having noW described my invention, I claimy 1. In a phonograph, the combination of means for holding a record tablet, a stylus, and an arm; each movable toward and from the tablet holding means, the arm serving to oppose movement of the tablet when moved toward said'tablet holding means, and means .for moving the stylus and arm simultaneously, substantially as set forth.

2. In a phonograph, the combination of a mandrel, a movable carriage, a lever for lifting said carriage, and means for preventing the placing of a record on the mandrel when the carriage is 1n its depressed position, the

said means permitting the placing of a record upon the mandrel When the carriage is raised, substantially as set forth.

.3. In a phonograph., the combination of a mandrel, a carriage, a lifting lever for said carriage and means under the control "of the said lifting lever which prevents the placing of a record on the mandrel or removing it therefrom When the carriage is ,in its depressed position, substantially,asl set. forth.

' 4. In a phonograph, thefombination of a erases mandrel, a carriage movable up and down,

means'normally resting in position to pre-. y

vent the placing of a cylinder upon the mandrei and means for lifting the carriage and moving the rst named means away from the position in the path of the cylinder, subA stantially as set forth.

5. In a phonograph, the combination of a mandrel, a carriage movable up and down, a guide rod for supporting said carriage means rotatable upon said guide rod and normally standing in position to prevent the movement oiP a cylinder non the mandrel and means for raising sai carriage and moving saidtcylinder obstructing rneansout of the pbstrueting position, substantially as set orth. l

6, In a phonograph, the combination a mandrel, a carriage, a guide rod on which the carriage rests, a bar eXtendin parallel to saidy guide lrod and having ookshaped members encircling said guide rod near thev 

